controlling annual bluegrass

 Is there a selective herbicide that controls annual bluegrass growing in
perenial bluegrass?

 Chas Hurst said:


Not that I've ever heard of. I called a spray tech from work, and he said
the same thing.
--

Eggs

-Opportunities always look bigger going than coming.

 
I don't have any experience with bluegrass, but I have to ask the
question anyway: If annual bluegrass comes back every year from seed,
why wouldn't a preemergence control it without harming the perennial?

KC

 
Pre-e will help somewhat but timing is everything. I use it in August for
poa control here in northern Ohio. You have to be careful to stay away from
bentgrass with it, and not to apply too much for fear of root pruning on
your desirable turfgrass.

You have to apply it after the poa dies back and before it re-germinates,
which is generally late summer.